Lakshya Education MCQs

Question: Alice is setting up a small network in her home so that she can study for her MCSE exams. She doesn't have a lot of money to spend on hardware, so she wants to use a network topology that requires the least amount of hardware possible. Which topology should she select?
Options:
A.Star
B.Right
C.Token-Ring
D.Ethernet
E.Bus
Answer: Option E

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Question 1. The CCITT Recommendation X.25 specifies three layers of communications:
  1.    application, presentation and session
  2.    Session, transport and network
  3.    physical datalink and network
  4.    datalink, network and transport
  5.    None of the above
Answer: Option C
Question 2. Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?
  1.    Amplitude modulation
  2.    Frequency-division multiple access
  3.    Frequency modulation
  4.    Frequency-shift keying
  5.    None of the above
Answer: Option B
Question 3. The amount of uncertainty in a system of symbol is called
  1.    Bandwidth
  2.    Entropy
  3.    loss
  4.    Quantum
  5.    None of the above
Answer: Option B
Question 4. A global network of millions of business, government, educational, and research networks; computer systems; database; and end users. Select the best fit for answer:
  1.    Internet works
  2.    The Internet
  3.    Internet revolution
  4.    Internet technologies
  5.    None of the above
Answer: Option B
Question 5. A T-switch is used to
  1.    control how messages are passed between computers
  2.    echo every character that is received
  3.    transmit characters one at a time
  4.    rearrange the connections between computing equipment
  5.    None of the above
Answer: Option D
Question 6. A WATS arrangement
  1.    is always less expensive than flat-rate service
  2.    is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
  3.    is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
  4.    is never less expensive than flat-rate service
  5.    None of the above
Answer: Option B

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